Average Co-Inventor Count = 2.05
ph-index = 5
The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.
Company Filing History:
1. Kubota Corporation (5 from 2,697 patents)
2. Teijin Limited (1 from 1,588 patents)
3. Techno Enami Corporation (1 from 1 patent)
7 patents:
1. 11535979 - Fiber material for cement reinforcement
2. 6823040 - X-ray inspection method and apparatus used for the same
3. 4856611 - Propelling transmission system of tractor
4. 4723623 - Four wheel drive vehicle
5. D283135 - Agricultural tractor
6. 4418783 - Tractor
7. 4268048 - Fuel tank mounting structure for a tractor